Roto Grip

Roto Grip TNT Bowling Ball

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  • Roto Grip TNT Bowling Ball and Core
  • Roto Grip TNT Bowling Ball
  • Roto Grip TNT Bowling Ball Core
MSRP: $239.95
— You save $75.00


Roto Grip TNT Bowling Ball

  • Color: Amber / Fire / Blaze Orange
  • Coverstock: eTrax PLUS Solid
  • Weight Block: Torpex Core
  • Factory Finish: 2000-grit Abralon
  • Flare Potential: High
  • Radius of Gyration (RG): 16lbs - 2.47; 15lbs - 2.47; 14lbs - 2.54
  • Differential (Diff): 16lbs - 0.050; 15lbs - 0.052; 14lbs - 0.051
  • Intermediate Differential (Diff): N/A
  • Fragrance: N/A


Cover –
eTrax PLUS Solid Reactive = We have never used this in the solid form before…This cover is overall stronger than original eTrax in terms of traction and response, but it’s not as early and aggressive as say MicroTrax or XtremeTrax…

Core –
Torpex Core = New Core Technology featuring Torque Sphere Technology (Like a power ball)…. Something we haven’t used since 2014 in the Unhinged & Hysteria…. The Torque Sphere will create a different type of continuation down lane since it is placed just above the inner equator. Not to mention this is now the lowest RG symmetrical part Roto Grip has in the line.

Where It Fits –
Designed to be the “Benchmark Ball” everyone needs… best example is like the old original IDOL, only better due the cover not being as early. There will be traction in oil along with the continuation down lane no matter the number of revolutions.

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Additional Information

Lane Condition:
Factory Finish:
Sanded 2000 Abralon
Core Type:
Solid Reactive
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40 Reviews

  • 5

    Posted by Brandon Boyer on Jun 16th 2023

    The TNT for me has been on Dynamite ball! It is perfect on just about any condition imaginable as long as there is some oil. On the shorter patterns it is smooth and round enough to be a nice piece to use if a Pitch Black isn’t in play. But it also provides plenty of dig when you need it for the longer patterns. It’s even really good at blending the back end on the trouble some 40ft patterns! I have also found some good success with it on a few different house shots as well. This ball is fantastic at blending cliffs left to right! If you are looking for a slightly stronger benchmark ball then look no further than the TNT!

  • 5
    Roto Grip TNT By Chase Roloson

    Posted by Chase Roloson on Jun 16th 2023

    Roto Grip TNT Layout: 4x4x4 Pin Down Bowlers PAP: 4 13/16” Over 11/16” Up Rev Rate 400 Rpm First Impressions: I recently had the opportunity to try out the Roto Grip TNT bowling ball, and I must say, it exceeded my expectations in every way. This ball truly delivers when it comes to power and versatility on the lanes. First and foremost, the TNT offers impressive hook potential. The ball’s dynamic core combined with the eTrax™ PLUS Solid Cover-stock creates a strong arc/rolling backend reaction that’s perfect for medium-heavy to heavy oil conditions. It’s capable of generating a strong and controlled hook, providing a substantial boost to my overall performance. What impressed me the most about the TNT is its versatility, The strong mid-lane read and continuous backend motion gave me the confidence to adjust my line without worrying about losing control. Another notable aspect is the ball’s hitting power. The Roto Grip TNT consistently carried through the pins with authority, resulting in improved pin carry and higher scores. It felt satisfying to see those pins scatter and knock down with precision at the same time keeping the pins low, increasing carry percentage. Additionally, the TNT’s overall build quality is excellent. The ball feels solid in hand and offers a comfortable and predictable release. The vibrant color scheme is visually appealing, making it stand out on the racks and adding a touch of style to my game. In conclusion, the Roto Grip TNT bowling ball is a top-notch performer. With its impressive power, versatility, and exceptional hitting power, it has quickly become a favorite in my arsenal. Whether you’re a competitive bowler or a casual player looking to step up your game, the TNT is worth considering. Give it a try, and you won’t be disappointed!

  • 4
    Check out D's Reviews

    Posted by DeeRonn Booker on Jun 14th 2023

    This is the ball to use for bowlers with a lot of axis tilt and axis rotation. For more info on your bowling style see your Pro Shop Operator to see if your release fits into that category. The cover and surface are very early It also loves oil and smaller angles to the break point. For some the ball rolled well with a shiny finish and with layouts using a larger pin buffer. (3 ½ or more). I like the ball, it has a specific purpose, but the more I use it, the more I see its potential. It has a similar shape to a Phaze 2 on the lanes, but I would use it as its own ball and not a replacement for a Phaze 2. After drilling a couple for myself I have used weaker layouts on the TNT and saw a much better response to friction.

  • 5
    TNT is Dynamite!

    Posted by Sandra McIntire on May 31st 2023

    I am a higher speed, rev challenged 220-250ish, high tilt, high rotation, and super low track player, I drilled my Roto Grip TNT 5x3x2 using the Storm VLS and my axis point is 3 ¼ right and 7/8 up. The Roto Grip TNT has definitely become one of my newer favorite release, especially for sport shots. The Roto Grip TNT is a perfect new addition to my arsenal because it is strong and early rolling solid that has a smooth transition that allows me to play straighter angles. My YouTube video of the ball can be found at: #sm2proshop #SquadRG

  • 5

    Posted by Casey Mattingly on Apr 26th 2023

    Smoooooth in a box! First of all, this ball and I did NOT get a long. Being a Pro Shop Owner/Operator, this ball is SUPER useful for some very important customers. My older crowed who has pretty slow ball speed are loving this ball!! I also have some high Rev players who get to play much further right than normal, with this bad boy! I think this ball is a testament to the workers in Utah for catering to all aspects of bowling. I drilled my TNT pin down which accentuated the issue of the ball being longer and smooth. Although I changed surfaces a couple times, I just couldn’t see where this ball really fit into my arsenal on house shots. If you have watched any of the PBA qualifying, you have seen the TNT get a lot of play. I can’t wait for the summer sport shot sweepers that are everywhere, go get some use on shorter patters with this ball! Layout for my TNT is Pin down: 4.5x4.25x3.75 Balls getting a lot of play Infinite Physix: 5x4x2 Eternity: 5x4x2 IQ Ruby: 5x4x2 Phaze4: 5x4x2 Fate: 5x4x2

  • 5

    Posted by Michael Slatky on Apr 16th 2023

    Roto Grip TNT Coverstock: eTrax + Solid Reactive Finish: 2000 Grit Abralon Core: TORPEX (14pd.) RG: 2.54 Differential: 0.051 Layout: 5 x 4 x 4 - 2LS Layout Extras: 2 1/8 Finger Depth, "X" - 4 1/2 D and 1 Inch Left Tester: PAP 6 1/2 R, 1 1/4 D Review: The TNT features the eTrax + solid reactive which makes the TNT distinctive in the Roto Grip line of bowling balls. In comparison to the Helios the TNT is earlier and a tad smoother. However, the TNT provides a touch more length then the Gem. Anything you desire in a ball to create earlier hook and control the TNT is what you are looking for. If you have been following the USBC Open scene the TNT has been a favorite to provide the bowler a nice controlled reaction for the patterns. In addition, at recent SPI MatchMaker events the TNT has grown in popularity for arsenals as a first ball out of the bag. Overall, I feel the oob finish is a tad strong and needs to settle in a bit. Either let the TNT lane shine slightly over a few games or knock the peaks of the surface down a touch with a 3K or 4K pad. Just to note, in my area the lanes tend to be older surfaces and get "sparky" fairly quickly. The TNT has its place as that control piece when you have it set to where you need it. The TNT will work best on medium and higher volume patterns. If your desire is to have control at the end of the pattern the TNT will nail it. Don't hesitate to try out the TNT. Please be sure to visit your favorite pro shop today or for more information. Michael Slatky 900 Global Staff Member York, PA

  • 5

    Posted by Zack Newman on Apr 12th 2023

    The Roto Grip TNT is being called possibly the predecessor to the previously released Magenta Idol. It has the eTrax™ PLUS solid coverstock wrapped around the Torpex core. I drilled mine 5x4x2, I am a low track player, 480RPM, 14 degrees of tilt, 55 degrees of axis rotation, average of 16.4MPH. What I saw was actually a surprising amount of easy length through the front part of the lane for a solid cover. In my initial test on our THS, the track area proved to be a little too much too early for the TNT, and I didn't really find a comfortable position for it until I got to around the 18-20 board range. Once I got there, I found a little area left and right and that seemed to be where the TNT was comfortable. Of course many variables are in play, if you have higher speed, more oil, less rev rate, or vice versa, your mileage will definitely vary. I compared it to my Phaze II as well as my IQ Tour Solid. The Phaze II was most definitely sharper down lane, and the IQ Tour solid was slower and more rounded. The TNT seems to fit right between those two as far as break point shape. Overall strength would be a different story as I would have the TNT the strongest out of the 3.

  • 5
    Roto Grip TNT

    Posted by Alex Thomes on Apr 11th 2023

    Ball Specs: Roto Grip TNT Coverstock eTrax™ PLUS Solid Weight Block Torpex™ Core Color Amber / Fire / Blaze Orange Finish 2000-grit Abralon Layout 50x4x20 or 4x4 5/16x1 1/4 Bowler Specs: Right Hand. PAP 3 1/2 Over 5/8 up Rev Rate 400 Speed at release 17.5 Review: The Roto Grip TNT is the newest ball in the HP3 line for Roto Grip. This features a new core in the Torpex and the solid eTrax plus cover. This ball is going to be similar to those Idols of the past. The TNT is going to start up a little sooner than the Idol but have a more responsive move on the back end. This is going to be a great benchmark ball for those people who have lower rev rates but also for higher ball speed and rev rate. I found this ball to read earlier than other solids but with the layout gave me a fast move on the back end. This ball is going to be a great control ball for me with being higher ball speed. If you are looking to get the ball to roll later this ball is great with surface changes. Get yours now at your local Storm VIP pro shop. Alex Thomes #StormNation #StrikingWorldwide #SquadRG #Driven2Bowl

  • 5

    Posted by Kassy Shumate on Apr 10th 2023

    Just what I was looking for. I relied heavily on my Phaze II in tournament settings and was looking for something that had just a bit more roll and really plowed through the oil. As the ball has continued to lane shine I have grown to like it even more. I find myself using it in league much more than I thought I would as the shot has proven to have much more oil than previous years. I wouldn't go as far as to say it is a "benchmark" ball even though it has been advertised as such, it is however very "comfy" to throw in many situations. It's not my first ball out of the bag but it is always IN my bag and ready.

  • 5
    Roto Grip TNT review

    Posted by Mike Craig on Mar 31st 2023

    I drilled my TNT 4 1/2 x 3 x 2. I left this one at the box finish which is 2000. The early scuttle on this one from other staffers is controllable but strong motion. Many plan to take this one to USBC Nationals a strong control piece. I compared it to the GEM, an original IDOL, and a EXOTIC GEM. Compare to the GEM, the TNT is a definite slower reaction but still early like the GEM. If you are needing to keep it in front of you and the GEM is starting to go too early, then the TNT is in play. Compared to the original IDOL, you can see a lot of the same motion. I like my IDOL when the lanes were tougher but I wanted the ball to grip the lane a little earlier in an arcing motion. The TNT cover is slightly newer so it is a few boards earlier than the OG IDOL. Compared to the EXOTIC GEM was almost not fair. The EXOTIC skated past the spot on to much oil where the TNT had it, and when the lanes got hooking more, the TNT went more forward than the EXOTIC. Almost not a fair fight between those two. Drill up a TNT if you want a good strong control ball for tougher/slicker lanes. The core/cover combo will immediately make you think of the original IDOL which was very controllable except a newer cover that grabs earlier.

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